Gallbladder

So my LT test was fine and so was my CBC everything was perfect. And I just had an ultrasound done and they didn’t find anything. I do have aniexty and I had a virus and then after that for 2 straight weeks I been having nausea and heartburn, loss of appetite my nausea has kind of gone away and I still get heartburn every now and then. I am freaking out thinking it’s my gallbladder and everyone told me they think it’s my aniexty. If I do a HIDA scan I have to pay half a thousand of dollars to do it...is it worth it do you guys think it’s a gallbladder issue or just an aniexty issue?